Robust Optimization Of Ride Comfort Of The SF33900-type Mining Dump Truck

Ride comfort is one of the important performances of mining dump truck, it notonly affect passengers’ ride comfort, but also affect the dynamical and economicalperformances of mining dump truck. As mining dump truck often work in complexand poor conditions, driver feels tired easily; in addition, the suspension systemssubjected to large deformation and strong nonlinear characteristics, because of itsload-bearing large. So, meet the engineering requirements of the vehicle, the ridecomfort and handling stability are improved. The hydro-pneumatic suspensionheight and damping holes and seat stiffness are optimized design, road roughnessincentive-induced vibration is reduced greatest degree, reduce driver fatigue, extendthe service life of various components of the vehicle.Selecting the mining dump truck (SF33900) as the research object, this paperbuilt the dynamic model. Taking the ride comfort as optimization target, Taguchirobust optimum design method is applied to the design of smoothness optimizationto improve vehicle ride comfort.Ride comfort to optimize under the conditions ofdifferent speeds, different loads, and different road conditions. Get robustcombination of suspension parameters. Main contents of this paper are as follow:1. This chapter first describes the research background and the subject source,and then by reading the extensive literature, Summarizes the status research ofdomestic and foreign ride comfort of mining dump truck, and pointed out theshortcomings and problems of the existing research.2. Experimental research of Vehicle ride comfort, determine the vibrationcharacteristics of the truck traveling in the commonly used speed, up and downmeasured points of hydro-pneumatic suspension response to the measured values,Measured value of the weighted acceleration of seat, Evaluate the vehicle’s ridecomfort and isolation performance of the pneumatic suspension system, verify thecorrectness of complete vehicle simulation model.3. According to the three-dimensional model of the UG, build vehicle dynamicsmodel in Adams/view. Simulation and analysis of vehicle ride comfort, the driverfeel uncomfortable, ride comfort is need to be optimized.4. Robust optimization design of the vehicle ride comfort, Taguchi robustoptimum design method is applied to the design of ride comfort optimization to improve vehicle ride comfort, choose stiffness of front and rear suspension, dampingcoefficient of front suspension and rear suspension as controllable factors, speeds,load, road as noise factor. At the condition of different speeds, different loads,different road conditions, the robustness of the vehicle ride comfort is improved,onthat premiset handling and stability is not reduced.